What is it about?
Crude oil spills harm the environment, while plastic waste from water sachets continues to pile up, especially in places like Nigeria. This study turns that plastic waste into a useful material for cleaning up oil. Researchers shredded discarded polyethylene water sachets and roughened their surfaces using ordinary salt. The treated plastic pieces float on water and soak up oil effectively, absorbing up to about 8 times their own weight under the best conditions. They can be squeezed and reused many times (typically 10 or more cycles) while remaining effective. Because the raw material is free waste plastic and the process is simple, the overall cost of removing oil is very low-much cheaper than commercial oil-absorbing products. This approach solves two problems at once: it reduces plastic pollution and provides an affordable, reusable tool for oil spill cleanup in places with limited resources.
Featured Image
Photo by RedTigerK on Unsplash
Why is it important?
This work is unique because it turns a major local waste problem (discarded polyethylene water sachets) into a practical solution for oil spills using only simple mechanical steps and common salt. Unlike many high-tech or expensive commercial sorbents, the material is made from free waste plastic, works well on real crude oil, can be reused many times after simple squeezing, and costs far less to deploy. The approach is especially timely for low-resource, oil-producing regions where both plastic pollution and frequent small spills are widespread, offering communities an affordable, locally producible tool that supports circular economy goals while reducing environmental damage.
Perspectives
As someone from Nigeria, I see every day how sachet water plastic litters streets (and drains), while oil spills continue to damage communities (and ecosystems) in the Niger Delta areas. What excites me most about this work is that we turned a waste material everyone recognises into something useful with very simple tools and salt- nothing expensive or complicated. Watching the roughened plastic soak up oil and then be squeezed and reused repeatedly gave me real hope that communities can start addressing both problems themselves. This study shows that practical, low-cost solutions are possible when we look at waste differently, and that is what I want to keep pursuing.
Dr Hassan Majiya
Ibrahim badamasi Babangida University
Read the Original
This page is a summary of: Valorisation of waste polyethylene sachets into low-cost reusable oil sorbents: Mechanical modification, process optimisation and techno-economic assessment, Chemosphere, October 2026, Elsevier,
DOI: 10.1016/j.chemosphere.2026.145111.
You can read the full text:
Resources
Contributors
The following have contributed to this page
